He, i experience slow internet too. I changed ionetworking kext ( i can't excactly rember it was this kext so includede 2 other kexts too in folder. And internet was working well again. Hmm can' t upload the file?
The other two are nforcelan and chipset. Try upload tomorrow, when i have time.

---

Asus A8N-E nForce4 - AMD Athlon (tm) 64 X2 Dual Core Processor 3800+ - AC97 Audio
nVidia GeForce 6600 LE 256MB - RAM 2048Mb - nForceLAN/ Realtek RTL 8139